Foo Fighters tore through the fairgrounds on Friday night! To see photos from day one of the festival, head here: https://bit.ly/2prll8Q

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Courtesy of Kaaboo Del Mar
Robert Plant -- former frontman of Led Zeppelin -- also topped the Sunday bill.

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KSNV
If you can't tell by this photo, the festival was sold out and the crowds were huge.

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Perry channeled the Jetsons for her stage getup.

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Courtesy of Kaaboo Del Mar
But she sure knows how to entertain the masses.

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Courtesy of Kaaboo Del Mar
A 2016 estimate put her net worth at around $125 million.

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Getty Images
Her last album, "Witness," came out in 2017.

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Handout
A little intergalactic art to break up the long walks.

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Courtesy of Kaaboo Del Mar
Robert Plant was the real treat, though.

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Courtesy of Kaaboo Del Mar
At 70 years old, he's still killing it.

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They definitely agree.

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Courtesy of Kaaboo Del Mar
He's long moved on from his legendary Led Zeppelin days, though.

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Courtesy of Kaaboo Del Mar
Now, it's all about the Sensational Space Shifters.

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Mezcalent
Robert Plant & the Sensational Space Shifters performing during day three of Kaaboo Del Mar 2018.

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Mezcalent
Robert Plant & the Sensational Space Shifters performing during day three of Kaaboo Del Mar 2018.

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Tim Fears
Robert Plant & the Sensational Space Shifters performing during day three of Kaaboo Del Mar 2018.

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Tim Fears
Robert Plant & the Sensational Space Shifters performing during day three of Kaaboo Del Mar 2018.

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Tim Fears
Robert Plant & the Sensational Space Shifters performing during day three of Kaaboo Del Mar 2018.

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Tim Fears
Robert Plant & the Sensational Space Shifters performing during day three of Kaaboo Del Mar 2018.

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Tim Fears
Robert Plant & the Sensational Space Shifters performing during day three of Kaaboo Del Mar 2018.

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Tim Fears
Onetime San Diegan Jewel is always a welcome sight in town!

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Tim Fears
Local lore has Jewel living out of her car in the mid-'90s, traveling the country and performing on the street and at small gigs. She gained recognition by singing at the Inner Change Cafe and Java Joe's.

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Tim Fears
She made her Java Joe's debut when the coffeeshop was still located in Poway -- and while she was working as barista there.

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Tim Fears
She soon became friends with Steve Poltz, of the Rugburns fame -- and they would play the same venues.

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Tim Fears
Jewel eventually collaborated with Poltz on some songs, including her soon-to-be smash hit, "You Were Meant For Me."

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Tim Fears
After signing with Atlantic Records, Jewel released her debut album, "Pieces of You," in 1995, when she was only 21.

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Tim Fears
Aside from "You Were Meant For Me," the album spawned the hits "Who Will Save Your Soul," and "Foolish Games." It went on to sell over 12 million copies since.

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Tim Fears
She followed up "Pieces of You" with the album "Spirit," which contained the hit single "Hands."

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Tim Fears
Since then, she has released 11 more studio albums, with 2015's "Picking Up the Pieces" as her latest.

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Tim Fears
Aside from her singing and songwriting talents, she's also an accomplished guitarist, producer, actress, author and poet. She's received four Grammy Award nominations, and has sold over 27 million albums worldwide.

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Courtesy of Kaaboo Del Mar
Groovy.

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Tim Fears
Alice in Chains were also on hand -- and played an incredible set!

Tim Fears
Although widely associated with grunge music, the band's sound incorporates heavy metal elements. Since its formation, Alice in Chains has released six studio albums, three EPs, three live albums, four compilations, two DVDs, 31 music videos and 31 singles.

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The band is known for its distinctive vocal style, which often included the harmonized vocals between original lead vocalist Lane Staley (who passed away in 2002) and Cantrell (and later between Cantrell and William DuVall).

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Tim Fears
Cantrell (pictured) started to sing lead vocals on the 1992 acoustic EP "Sap," and his role continued to grow in the following albums, making Alice in Chains a two-vocalist band.

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Tim Fears
Alice in Chains rose to international fame as part of the grunge movement of the early 1990s, along with other Seattle bands such as Nirvana, Pearl Jam, and Soundgarden.

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The band was one of the most successful music acts of the 1990s, selling over 20 million records worldwide, and over 14 million records in the US alone with two No. 1 albums and six Top 10 albums on the Billboard 200 chart.

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Their debut album, "Facelift," featuring the hit single "Man In The Box," was released in 1990 and has been certified double-platinum by the RIAA, selling over 2 million copies. In 1992, the band's second album, "Dirt," was released to critical acclaim and was certified quadruple platinum.

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Tim Fears
Their second acoustic EP, "Jar of Flies," debuted at No. 1 on the Billboard 200 chart in 1994, becoming the first ever EP and first Alice in Chains release to top the charts, and it has been certified triple platinum by the RIAA. The band's third album, "Alice in Chains" debuted at No. 1 on the Billboard 200 in 1995.

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After Staley's untimely death, and DuVall's addition to the lineup, the newfangled band released their fourth studio album, "Black Gives Way to Blue," in 2009, which debuted at No. 5 on the Billboard 200 and garnered them two Grammy Award nominations.

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Tim Fears
Their fifth studio album, "The Devil Put Dinosaurs Here," was released in 2013 and debuted at No. 2 on the Billboard 200. Alice in Chain's sixth studio album, "Rainier Fog," was released on Aug. 24.

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Courtesy of Kaaboo Del Mar
Best seats in the house?

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Tim Fears
The All-American Rejects trotted out a fun, raucous set earlier in the day. They originally formed in Stillwater, Oklahoma in 1999.

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Mike Carlson
The band consists of lead vocalist and bassist Tyson Ritter, lead guitarist and backing vocalist Nick Wheeler, rhythm guitarist and backing vocalist Mike Kennerty, and drummer Chris Gaylor. Nick Wheeler and Tyson Ritter, are the band's songwriters; Wheeler is the primary composer and Ritter is the main lyricist.

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Tim Fears
The All-American Rejects achieved mainstream success with their debut self-titled studio album, released in 2003 on the Dreamworks Records label. The album was certified platinum by the RIAA and spawned the single "Swing, Swing".

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Tim Fears
The band's second studio album "Move Along" brought the group further mainstream success in 2005, producing the hit singles, "Dirty Little Secret", "Move Along" and "It Ends Tonight," all of which charted in the top 15 on the Billboard Hot 100 chart, while "Move Along" was certified triple platinum by the RIAA.

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Tim Fears
Ritter (pictured) is also a legit double-threat, having also appeared in television series and films such as "House" (2007), "The House Bunny" (2008), "Betas" (2013–14), and "Parenthood" (2013–15). His next projects included a role in the John Cusack film "Love and Mercy" (2014). In 2015, he had a supporting role in the comedy-drama film "Miss You Already," which starred Toni Collette and Drew Barrymore.

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Tim Fears
The All-American Rejects have sold over 10 million albums worldwide. They were ranked No. 73 on the "Hot 100 Artists of the 2000s" and No. 183 on the "Billboard 200 Artists of the Decade" lists.

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Courtesy of @sam1sf/Instagram
Slash featuring Myles Kennedy and the Conspirators were, of course, a big draw during Sunday.

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Tim Fears
Slash is best known as the lead guitarist of Guns N' Roses, with whom he achieved huge worldwide success in the late 1980s and early 1990s. If you haven't heard, they're back on the road these days, too!

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Tim Fears
Kennedy is the lead vocalist of Alter Bridge. Bobby Schneck and Frank Sidoris play guitar, Todd Kerns plays bass, and Brent Fitz plays drums in the band.

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NBC Bay Area/Simmons family
Slash has released three solo albums: "Slash" (2010), featuring an array of guest musicians, "Apocalyptic Love" (2012) and "World on Fire" (2014) -- recorded with the band that played Kaaboo.

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Tim Fears
Slash has received critical acclaim and is considered one of the greatest rock guitarists. Time magazine named him runner-up on their list of "The 10 Best Electric Guitar Players" in 2009.

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Tim Fears
Rolling Stone placed him at number 65 on their list of "The 100 Greatest Guitarists of All Time" in 2011.

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Tim Fears
Guitar World ranked his guitar solo in "November Rain" No. 6 on their list of "The 100 Greatest Guitar Solos" in 2008, and Total Guitar placed his riff in "Sweet Child o' Mine" at No. 1 on their list of "The 100 Greatest Riffs" in 2004.

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Tim Fears
In 2012, he was inducted into the Rock and Roll Hall of Fame as a member of Guns N' Roses' classic lineup. To see photos from day one of Kaaboo Del Mar 2018, head here: https://bit.ly/2prll8Q